The behavior of dogs is influenced by dietary effects on satiety. Dietary fiber may prolong the gastric emptying time, slow the absorption of nutrients and dilute the energy of the diet. Thus, the development of strategies to increase satiety may be desirable to help to increase socialization and decrease undesirable behaviors of the animals. Soybean hulls (SH) is an alternative fiber source for dog food, due to the soluble and insoluble fiber portions resulting in benefits in the animal's health. Thus, this study aimed to evaluate the behavior of dogs after ingestion of diets without (0%SH) and with 16%SH. Twelve adult Beagle dogs (6 males and 6 females) in a completely randomized design were used. Dogs were individually housed in concrete kennels with solarium (2 m wide × 5 m long) and received the diets for 28 d. The behavior of dogs was evaluated on the 28th day, for 24 h continuously, at intervals of 10 min between each observation. The behaviors assessed were: alert, walking, scratching, sleeping, stereotypies, hygiene, lying idle, standing idle, sitting leisure and socialization. The results were expressed as the behavior occurrence frequency (%) (number of observations of the behavior / total number of observations × 100). Data were analyzed using the Mann-Whitney-Wilcoxon test, with P < 0.10. There was a decrease in the behavior of scratching (P < 0.05; 9,3% 0%SH to 3.7% 16%SH) and stereotypy (P < 0.10; 8,3% 0%SH to 4.8% 16%SH) in dogs fed 16%SH, in comparison with the 0%SH diet. The other behaviors did not differ (P > 0.05) between diets. Diets with SH, as fiber source, can decrease stereotypy behaviors of dogs.